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dc.contributor.authorBuesa, Carlos
dc.contributor.authorPié, Juan
dc.contributor.authorBarceló, Ana
dc.contributor.authorCasals i Farré, Núria
dc.contributor.authorMascaró, Cristina
dc.contributor.authorCasale, Cesar H.
dc.contributor.authorHaro, Diego
dc.contributor.authorDuran, Marinus
dc.contributor.authorSmeitink, Jan A. M.
dc.contributor.authorHegardt, Fausto G.
dc.date.accessioned2021-05-04T16:53:13Z
dc.date.available2021-05-04T16:53:13Z
dc.date.issued1996-11
dc.identifier.citationBuesa, Carlos; Pié, Juan; Barceló, Ana [et al.]. Aberrantly spliced mRNAs of the 3-hydroxy-3-methylglutaryl coenzyme A lyase (HL) gene with a donor splice-site point mutation produce hereditary HL deficiency. Journal of Lipid Research, 1996, 37(11), p. 2420-2432. Disponible en: <https://www.sciencedirect.com/science/article/pii/S0022227520374903?via%3Dihub>. Fecha de acceso: 4 may. 2021. DOI: 10.1016/S0022-2275(20)37490-3ca
dc.identifier.issn0022-2275ca
dc.identifier.urihttp://hdl.handle.net/20.500.12328/2518
dc.description.abstractA novel point mutation in the 3-hydroxy-3methyl-glutaryl coenzyme A lyase gene was found in a Turkish patient with homozygous 3-hydroxy-3-methylglutaric acidemia. Amplification by RT-PCR of the mRNA using a six different pairs of oligonucleotides produced no differences in four of the fragments amplified with respect to the control, but generated two fragments of different size. One was representative of a deletion of 126 bp and the other of an insertion of 78 bp. These abnormal mRNAs resulted from a G–>C transversion at the nucleotide +1 of an intron, which changed the invariant GT dinucleotide of the 5' donor splice site. This was associated with the occurrence of an alternative splicing, which led to the skipping of the whole exon of 126 bp, and also with the activation of one cryptic donor splice site in the same intron. These aberrant spliced mRNAs are predicted to encode two abnormal HMG-CoA lyase proteins: the first results in a protein with an internal deletion of 42 amino acids, whose enzyme activity is largely abolished, as the catalytic site was completely removed; the second contains 17 missense amino acids that precede a stop codon. Northern blot analysis showed that the overall content of these aberrantly spliced mRNAs in proband fibroblasts was the same as that found in control fibroblasts. However, hardly any transcript was observed corresponding to the inserted mutated mRNA when it was examined by a specific probe. To quantify the relative proportion of the two mRNAs, a quantitative RT-PCR (the DNA-mimic PCR reaction) was carried out. Results show that the proportion of the inserted mRNAs with respect to the deleted mRNA is only 1.2%. The father, mother, and two brothers of the proband were heterozygous in the G–>C mutation in the +1 nucleotide of the intron considered, while the two alleles of another brother were free of the mutation.ca
dc.format.extent13ca
dc.language.isoengca
dc.publisherAmerican Society for Biochemistry and Molecular Biologyca
dc.relation.ispartofJournal of Lipid Researchca
dc.relation.ispartofseries37;11
dc.rightsUnder a Creative Commons license. This is an Open Access article under theCC BY license.ca
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subject.otherNucleòtidsca
dc.subject.otherRNAca
dc.subject.otherAminoàcidsca
dc.subject.otherEnzimsca
dc.subject.otherADNca
dc.subject.otherNucleótidoses
dc.subject.otherARNes
dc.subject.otherAminoácidoses
dc.subject.otherEnzimases
dc.subject.otherADNes
dc.subject.otherNucleotidesen
dc.subject.otherRNAen
dc.subject.otherAmino acidsen
dc.subject.otherEnzymesen
dc.subject.otherDNAen
dc.titleAberrantly spliced mRNAs of the 3-hydroxy-3-methylglutaryl coenzyme A lyase (HL) gene with a donor splice-site point mutation produce hereditary HL deficiencyca
dc.typeinfo:eu-repo/semantics/articleca
dc.description.versioninfo:eu-repo/semantics/publishedVersionca
dc.rights.accessLevelinfo:eu-repo/semantics/openAccess
dc.embargo.termscapca
dc.subject.udc61ca
dc.identifier.doihttps://dx.doi.org/10.1016/S0022-2275(20)37490-3ca


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Under a Creative Commons license. This is an Open Access article under theCC BY license.
Except where otherwise noted, this item's license is described as https://creativecommons.org/licenses/by/4.0/